Research

My present-day research assesses the causes of tropical cyclones (TC) climate variability, with an emphasis on the role of dust aerosols. I approach the problem through simple model development and a combination of reanalysis data and EOF-like methods. Recently, I have also worked on the thermodynamics of TCs, on theoretical bounds on TC intensity, and on deep convective initiation.

Research Topics

Climate and Tropical Cyclones

I currently work on deepening our understanding of hurricane activity variability by partitioning variations of potential intensity (PI) between global contributions (like CO2 increase) and local contributions (like dust aerosol variability).

Fundamental Physics of Tropical Cyclones

My previous PhD work focused on expanding our understanding of factors limiting the maximum intensity of TCs, and of TC feedbacks on their immediate environment.

Mid-Latitude Mesoscale Meteorology

The goal of this project was to investigate the parameters that favor the transition of nascent cumuli into deep convection. It was a fun project which required developing a thermal tracking algorithm to follow the life-cycle of simulated convective cores.

Peer-reviewed publications

(2020) Rousseau-Rizzi, R., R. Rotunno, and G. Bryan: A Thermodynamic Perspective on Steady-State Tropical Cyclones. Journal of the Atmospheric Sciences.

(2020) Emanuel, K., and R. Rousseau-Rizzi:  Reply to “Comments on ‘An Evaluation of Hurricane Superintensity in Axisymmetric Numerical Models’”. Journal of the Atmospheric Sciences.

(2020) Rousseau-Rizzi, R., and K. Emanuel: Reply to “Comments on ‘An Evaluation of Hurricane Superintensity in Axisymmetric Numerical Models’”. Journal of the Atmospheric Sciences.

(2019) Rousseau-Rizzi, R., and K. Emanuel:  An Evaluation of Hurricane Superintensity in Axisymmetric Numerical Models. Journal of the Atmospheric Sciences.

(2017) Rousseau-Rizzi, R., D. Kirshbaum, and M. K. Yau: Initiation of Deep Convection over an Idealized Mesoscale Convergence Line. Journal of the Atmospheric Sciences.

Conference Presentations

(2020) A Linear Model for Potential Intensity Variability. AGU Fall Meeting

(2020) Steady-State Tropical Cyclones in Axisymmetric Numerical Models (poster). AMS Annual Meeting

(2019) An Evaluation of Hurricane Superintensity in Axisymmetric Numerical Models. Conference on Atmospheric and Oceanic Fluid Dynamics

(2018) An evaluation of potential intensity in simulated axisymmetric hurricanes. AGU Fall Meeting

(2016) The Transition from Shallow-to-Deep Cumulus Convection Over an Idealized Mesoscale Convergence Zone. 50th CMOS Congress*

* Presented by Prof. Daniel Kirshbaum

(2015) The Shallow-to-Deep Convective Transition Over an Idealized Mesoscale Convergence Zone. AGU Fall Meeting

(2015) The Shallow-to-Deep Convective Transition Over an Idealized Mesoscale Convergence Zone (poster). AMS 16th Conference on Mesoscale Processes